I think HLS may have more Jewshttp://www.law.harvard.edu/students/orgs/jlsa/ says that they have over 300 members (presuming all are Jewish) that means about 100/class (though it is likely to be more bc not all Jews will join)...so at least 18% Jewish

I dont know about their law student admissions, but I went to IU-B for undergrad and there are MORE than your fair share of Jewish kids from New York/Jersey, etc. My abiding sense tells me that their law school profile would reflect this as well.